Flax seeds, Lavender Buds & Lavandula Angustifolia Oil. Close your eyes and feel calm. This mask comforts tired eyes while the calming lavender takes you to a deep slumber. They are great for that restful sleep. To use it as a hot pack put it in the microwave for 45 seconds –one minute depending on the required heat. Please note that all microwaves vary in temperature and test before you put it on your eye. To use it as a cold pack put it in a Ziploc bag and put it in your freezer for several hours. Use it as needed. Place over closed eyes.